Centrifugal pump.



1,273,9'1. Patentedquly 30, 1918.

. -v 1 zsuEETs-SHEET 1.

4- 156 A .a o l i Il IHK l *4 'S ATTQRNEY romusos'iiiimiine,'or'sairaosn eariircairia.'

Lamela.

. Specicationof Letters Patent.. Patented, July 30,1918..l

"'Apliuegupn nieaxarcir i5, 1917. "sensi No. isaerzc.

To. all whom z't may convenu.

Be it known that I,' PoN'rusOsTEisBnRc, a. citizen of the United States,and resident of San Jose, in the county ot- Santa @lara l and, State ofCalifornia, have invented cer tain new and useful Improvements inCentrifugal Pumps,-o`f which the 'following is a specification.

My invention relates to improvements in centrifugal pumps which utilizetwo or mOrestage's of rotors to revolve liquid to create pressure, ofwhich the chief characteristic feature is the elimination of bearingsand necks between the. rotors or impe1lers, and in inserting the .rotorsin a con'- tinuous spiraled tubular pump body, as will v'be "more fullydescribed herein.

Another feature of the invention that the liquid will be kept in acontinuous revolving motion from the time it enters the first rotor o rviinpeller member until it leaves thellast member, which is an essentialpoint.

- in 'high operating eciency.

Que obiect ofthe present invention provide a simple, substantial,cheaply manufactured deep well pump, 'par ticularly toprovide a novelconstruction lof pump body orbowl'and impellerarrange ment conducive tohi h operating ei'ciency, which will be more Iully descri ed herein.

In the drawings,- Figure 1 is a vertical, 'transverse section through myimproved pump, partly in elevation.

Fig. 2 is a sectional view on line A-A of Fig. 1 but provided with vanesextending back tothe body of the rotor.

Fig is an elevation of one of the vanes -edge a and sho'ivn at 5".

chambers' 3. 'In vertical; 'crosssection each chan'rber' Wall is shownas curving sharply inwardly at the bottom and having a more gradualoutward curve attlie top to the ripper edge 4. llithineach of saidchambers 3 are :termed three spiral members 5,-each member extending adistance around chamber 3, rise ing from the lower curve of said chamberin such a manner as to form a continuousv sur face therewitlras at 53,and gradually nar-y rewingl andv dying out. as itv reaches upper At. fisshown a rotor member secured to shaft 7 by heyy-8, rotor 6 being formedto present a circular iiange 9 to the under side of the outer portionofwhich is secured a number o'vanes as 10, said vaines i() beingeach-vane being provided with a vertical Wearing surface curvingbacliwardly' with respect to\\a diametrical piane 'passing Athreugh itsinner edge. In Fig. l vanes -10 do not extend back to the body of therotor as shown in Fig. 2'but only extend back the width of member ill..`Member 11- is preferably beveled on its under side to vform.continuation of the inwardly curving 4upper portion of chamber` 3.'Sincethe rotors tl are designed to be' axially alined and operated asone member, thereby forming a ceinpound rotor, the under surface of eachis curved inwardly downwardly 'l2 to meet the inward and upward curre 13 ofv the next lower rotor so that the upper and lower surfaces of thevanes form' la con. tinuous surface W1th the abutting surfaces` of thecontiguous n embers. The lcwermost rotor Sis preferably formed with aiat under surface to flange 9 as shownatli.

"When formed and itted as aboveA Set forth, 'with Vthe upper surfaces ofmembers l1 in alinement with the lower curve of secured in turn to anannular member 11 and chambers 3, a continuous curved passage is.

ormedfrom the bottom of bowl l to the discharge casing 2. The severalrotors 6 are secured to shaft 7 as described and therefore have nobearings or necks such as usually provided, shaft 7 operating in bearingl5 which is supported in the usura Zinanner. @n the lower portion 0i.bearing l5 is formed a 1flange 3.6 having a downwardly icc or moreconduits as Q0.

- Itotor vanes 10 are shown and each preferably positioned in such amanner as to present -a wearing surface curved backwardly with respectto a diaiiietiical plane passing through' its inner edge as in F ig'. 2,

and at the saine time curving forwardly and downwardly as shownin Figs,3 and..6. In

4vFig. 5 another .forni of vane is.' shown which not only curvesbackwardly as shown in Fig. 2 but also inclines downwardly and forwardlyin straight lines. Then the form used in Fig. 6 is used it is preferableto carrv the vane clear back to the curved bodv ouf member 6. as shown.Fig. 4f indicates "that, my improved form of pump is alsovreadilvadaptable to the horizontal turbine the gen1,

eral direction ofthe spiral nienibers being indicated in dotted linesatfc.

'When iii operation shaft 7 is revolved in the direction indicatedby theai'rpw in Fig. Q, thekwater being thrown outwardly and given a rotarymovement bythe force iinparted through vanes 10. As the water is forcedinto chainbeis 3 it is yreceived by the upwardly curving spiral members5 and guided upwardly until taken 'up by the next succeeding rotor orforced into the discharge casing as thel case may be.

desired pitch, their function being solely to assist in directing thewater 'upwardly' and thereby lessen'ing the inertia whichthe vanesthemselves have to overcome.

It niay now be seen that in v'improved vpump provides a constructionwhich does not require bearings in connection with each rotor, theseveral members G being contigu-J cli-anges may be made tofmeet therequire-l ments of practical application and exigencies of manufacture.but. within the scope of the appended claims. In the following claimsthe words inserted therein in a unitary structure are used in the senseof lieing a unitary structure. when in position and not necessarilybeing a unitary strut-ture during the act of plat-nr;T in position. lorinstance, if the sli-ait were put in position The members; a may be ofany desired number and of any in the casing and the several rotorssubscquently placed thereon they would form a unitary structure insertedwithin the easing and woiild-be'removable in a. unitarv structure. .y

. Having thus describedmy invention, what I claimas new and desire to'secure by Letters Patent, is

1. In a centrifugal pump, a casing provided with a' cylindrical centralchamber having a plurality of rotors operatively and removablyinsertible therein in a unitary struc-ture, and having inlet and outletopen-l ings, and an annular chamber formed in the wall thereof inoperative vrelation to each rotor.' j

2, In a centrifugal pump, a. casing provided with a cylindrical centralchamber having a plurality of -rotors operatively inlsertible therein ina unitary structure, and havingr inlet and outlet openings. and anannularchamber formed in the wall thereof in operative relation to eachrotor, each annular -chamber having one `or -more upwardly inclinedvanes positioned therein.

3. Av centrifugal 4pump comprising a .multicliambered casing having acompound rotor removably and operatively insertible therein in a'unitary structure.

4.. In a centrifugal pump, a casing provided with a cylindrical centralchamber having a plurality of rotors operatively iiisertible therein inaunitary structure. and having inlet and outlet openings. and an annularchamber formed in the wall thereof in operative relation to each rotor.each annular 'chamber curving sharply inwardly at the bottomand moregradually outwardly at the top, and having one or more upwardly inclinedvanes positioned therein.

5.'In a centrifugal'pump,a. casing provided with a cylindrical centralchamber having a plurality 'ofrotors opera-tivelyinsei-trible therein ina unitary struct-ure. and having inlet and .outlet openings. and anannular chamber formed in the 'wall thereof in operative relation toeach rotor, each annu ar chamber curving sharply inwardly at, tl 1.bottoni and more gradually outwardhY at the top. and having one or moreupwardliinclined' vanes positioned therein'. each vane forming acontinuous surface with its respective chamber at its lower end.

6. In a centrifugal pump. a casing provided with a cylindrical centralchamber having a plurality of rotors operatively insertible therein in aunitary structure. and having inlet and out-let openings. and anIaiiiiiilai chamber,formed in the wall thereof Lin operative relation toeat-h rotor. each annular chamber curving sharply inwardly at thebottoni and more gradually outwardly at the top and having one or moreupwardly inclined vanes positioned therein. each vane forming acontinuous surface with its rcper 'edgeof said. `chamber and inwardlyinclined toward the axis ofsaid chamber;

7."In a centrifugal pump, a casing prov vided with a cylindricalcentralchamber.

- operative relation to each rotor,'eaoh annular i chamber curvingsharply inwardly at the having a plurality of rotors operatively in-Asertible'thereiii in a unitary structure, and

nular chamber formed in the Wall thei'eotin 'bottom and more graduallyoutwardly at the top and having one or more. upwardly inclined vanespositioned therein, each vane forming a continuous surface with its'respective chamber at its lower end and gradually becoming narrower asit approaches the upper edge of said chamber.

S. In a centrifugal pump, a shaft, two or more rotors mounted thereon, acommon bearing for said rot-ors, and a pump bowl vprovided with aplurality of spiraled chain.

bers operatively positioned with relation to said compound rotor.

9. In-a centrifugal pump', a casing provided with av cylindrical centralchamber having Va plurality of rotors operatively insertible therein ina unitary structure, andliaving inlet and oiitlet openings, and anannular chamber formed in the Wall thereof in operative relation to eachrotor, each annular chamber having one or more upwardly inclined vanes'positioned therein,

i' and each vane forming a continuous surd face with itsrespective'chamber atits lower l0. ln a centrifugal pump, a casingprovided with a. cylindrical central 'chamber having a plurality ofrotors'operatively iiisertible therein ina unitary structure, and havinginlet and outlet openings, and an annular chamber formed in the wallthereof -in operative relation to each rotor, each an.

nular chamber having one or more upwardly inclined vanes positionedtherein, each vane forming a continuous surface with its iespectivechamber atits lower. end and grad ually becoming narrower as itapproaches the upper edge of said chamber.V

` l1. In a centrifugal pump, a casing provided with 'a 'cylindricalcentral chamber having a plurality of rotors operatively insertihletherein in a .unitary structure,` and having inlet and outlet openings,and unam nular chamber formed in the wall thereof in operative relationto each rotor, .each an'- nular chamber having one -or more'upwardlyinclined venes positioned therein, each vane forming a continuoussurface with its re-v spective chamber at its. lower end and graduallybecoming narroweras it approaches thchupper edge of said chamber andincliniing inwardly toward the axis said cliai'iiberb per. edge of saidchamber.

having a. pluralityiof rotors operativelyin'flsertible therein in aunitary structure,4 andv`vv g having inlet and outletopenings", and an'annular chamber formed inthe .wall thereofvr .in 'operative relation toeach -rotor,-eaeh anv nular chamber having one or more' upwardlyhavingjinlet and outlet openings, and an an-` A inclined vainespositioned therein, each 'vane becoming 'narrower as it approaches theup- 113. In a centrifugal pump, a .casing i vided with a cylindricalcentral chamber having a plurality of rotors -operativelyiw sertibletherein in a unitary structure, and

'having inlet and outlet openings, and ariane.

nular chamber formed inthe 'wall thereof inoperative relation to. eachrotor, each an nular chamber having one or more upwardly inclined variespositioned therein, each vane' lbecoming narrower as ii-"approaches theupper edge of said chamber andbeing'inclined inwardly toward the axisofv saidchainber.

14. In a centrifugal pump, a casingpro vided with a. cylindrical centralchamber having a plurality ot rotors opei'ativelyfini-M seitible thereinin a unitary structure; .fai-id.VVAA

having inlet and outlet openings, and anjannular` chamber formed in the.wall thereof@V 4 in operativeA relation to each rotor, each an 95.-

Iiular Chamber having one or more upwardly inclined vanes positionedtherein. each vane being inwardly inclined' toward the axis off thechamber.` 4

15. ln a centrifugal pli-nip,

a casing pro vided withv .a cylindrical central clianiberf` havingaplurality of rotors operatively inf' sertible therein in a unitarystructure, and',

having-inlet and outlet openings,' and aiiuaii- 1 nular chamber formedin the .wall .tlieif'eot in operative relation to each rotor, saidrotoi'sj being centered by ayhearing positioiiedfabove the uppermostrotor.

i6; ln a centritugalpunip, a casing pro# having a plurality of rotorsoperatively in'- sertible therein in a unitary structure, and havinginlet and outlet openings, andan annular chamber formed in the wallthereof in. .operative 'ielationto' eaehrotor, the lower yliaviurig eplurality ot rotore operat-italylin .eertihletherein 'in a unitarystructure, and

having inlet outlet openings, and an an* nular, chamber ormedin the`wall 'thereof in operative reiat-ioiito each rotor, each ai'inularchamber havin one or more-upwardly.

inclined vence positioned' thereim and the lower portion of each ofthevanes' of said rotors curving forwardly' inthev direct-ion of rotationof. rotors.'

'vided with' a cylindrical central cliamberllt):

iis

1S. In a .centrifugal pump, a casing provided With a cylindrical centralchamber having a plurality of rotors operatively inserted therein in nunitary structure, und

5 having inlet and outlet openings', and :1n :1nnular chamber formed inthe wall thereof in operative relation to each rotor, the upper andlower surfaces of said rotors forlrling a Continuous surface with theabutting sui'- faces of the contiguous members. 10

Y In testimony whereof Il have hereunto affixed my signature this 7thday of Marg).

PONTUS OSTENBER-G.

